This is an announcement for the paper "The algebra of bounded linear operators on $\ell_p\oplus\ell_q$ has infinitely many closed ideals" by Thomas Schlumprecht and Andras Zsak. Abstract: We prove that in the reflexive range $1<p<q<\infty$ the algebra of all bounded linear operators on $\ell_p\oplus\ell_q$ has infinitely many closed ideals. This solves a problem raised by A. Pietsch in his book `Operator ideals'. Archive classification: math.FA Mathematics Subject Classification: 47L20, 46B25 Remarks: 18 pages Submitted from: a.zsak@dpmms.cam.ac.uk The paper may be downloaded from the archive by web browser from URL http://front.math.ucdavis.edu/1409.3480 or http://arXiv.org/abs/1409.3480